body {
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%; /* Safari */
}
.field {
    display: flex;
    justify-content: start;
}

.left {
    background: #cccccc;
    width: 25%;
    padding: 20px;
}

.right {
    width: 75%;
    padding: 20px;
}